通过对比分析发现:若采用流量计测量法,对于低温绝热管道(特别是管径较小的低温管道),试验很难达到标准中所要求的测试条件;表面温度测量法则相对来说更适宜低温绝热管道漏热量测量,但对照标准,在数据处理过程中除考虑自然对流换热因素,还应充分考虑辐射换热的影响,否则结果偏差加大。 Through the comparative analysis, it is found that if the flowmeter method is adopted, it is very difficult for the test to meet the test conditions required by the standard for the low-temperature insulated pipelines (especially the low-temperature pipelines with smaller pipe diameters); the surface temperature measurement rule is more suitable for the low temperature Insulation pipe leak heat measurement, but the control standard, in the data processing process in addition to consider the natural convection heat transfer factor, but also give full consideration to the impact of radiation heat transfer, or the results deviation increases.